US2562090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of dibromobutene
Assignee: Phillips Petroleum Co
•
Filing: 1948-07-26
•
Granted: 1951-07-24
•
Expires: 1968-07-26
Abstract
No abstract record available.
Inventors
- 👤 Frederick E Frey
- 👤 Francis E Condon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:57
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
THE PROCESS OF PRODUCING A SOLID POLYMERIC MATERIAL FROM A COMPOUND HAVING THE FORMULA XCR2CR''=CR''CR2X, IN WHICH EACH R REPRESENTS A MEMBER OF THE GROUP CONSISTING OF AN ALKYL GROUP CONTAINING NO MORE THAN 3 CARBON ATOMS AND HYDROGEN, R'' IS A METHYL GROUP OR HYDROGEN AND X REPRESENTS A HALOGEN, WHICH COMPRISES, REACTING SAID COMPOUND WITH AN ALKALI METAL AT A TEMPERATURE NOT GREATER THAN 200* C. WHILE SAID COMPOUND IS DISSOLVED IN A LIQUID REACTION MEDIUM WHICH IS INERT TO SAID COMPOUND AND SAID ALKALI METAL, AND MISCIBLE WITH SAID COMPOUND, AND RECOVERING A RSULTING SOLID POLYMERIC MATERIAL AS A PRODUCT OF SAID PROCESS.
Claim 2
Dependent Claim
106 words
THE PROCESS OF PRODUCING A SOLID POLYMERIC MATERIAL FROM A COMPOUND HAVING THE FORMULA XCR2CR''=CR''CR2X, IN WHICH EACH R REPRESENTS A MEMBER OF THE GROUP CONSISTING OF AN ALKYL GROUP CONTAINING NO MORE THAN 3 CARBON ATOMS AND HYDROGEN, R'' IS A METHYL GROUP OR HYDROGEN AND X REPRESENTS A HALOGEN, WHICH COMPRISES, REACTING SAID COMPOUND WITH AN ALKALI METAL AT A TEMPERATURE NOT GREATER THAN 200* C. WHILE SAID COMPOUND IS DISSOLVED IN A LIQUID REACTION MEDIUM WHICH IS INERT TO SAID COMPOUND AND SAID ALKALI METAL, AND MISCIBLE WITH SAID COMPOUND, AND RECOVERING A RSULTING SOLID POLYMERIC MATERIAL AS A PRODUCT OF SAID PROCESS.
References Cited (Backward Citations)
US2038593A
Cited
US2102611A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |